<template>
  <div class="app-container">
    <el-form
      :model="queryParams"
      ref="queryForm"
      :inline="true"
      v-show="showSearch"
      label-width="68px"
    >
      <el-form-item label="课程名称" prop="courseName">
        <el-input
          v-model="queryParams.teacherName"
          placeholder="请输入"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>
    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd">新增</el-button>
      </el-col>

      <!-- <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar> -->
    </el-row>

    <el-table v-loading="loading" :data="teacherList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="序号" align="center" type="index" width="100" />
      <el-table-column label="讲师" align="center" prop="teacherName" />
      <el-table-column label="课程名称" align="center" prop="courseName" :show-overflow-tooltip="true" />
      <el-table-column
        label="简介"
        align="center"
        prop="courseIntroduction"
        :show-overflow-tooltip="true"
      />
      <el-table-column label="原价" align="center" prop="originalPrice" />
      <el-table-column label="实际价格" align="center" prop="realPrice" />
      <!-- <el-table-column label="购买人数" align="center" prop="payCount" /> -->
      <el-table-column label="创建时间" align="center" prop="createTime" width="90px" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)">修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.current"
      :limit.sync="queryParams.size"
      @pagination="getList"
    />
    <!-- 添加或修改公告对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="780px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-row>
          <el-col :span="12">
            <el-form-item label="讲师名称" prop="teacherName">
              <el-select
                v-model="form.teacherId"
                filterable
                @change="selectedTeacher"
                placeholder="请选择"
              >
                <el-option
                  v-for="item in teacherOptions"
                  :key="item.id"
                  :label="item.teacherName"
                  :value="item.id"
                />
              </el-select>

              <el-input v-model="form.teacherName" v-show="false" />
            </el-form-item>
          </el-col>
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="课程名称" prop="courseName">
              <el-input v-model="form.courseName"></el-input>
            </el-form-item>
          </el-col>
          <el-col :span="1">&nbsp;</el-col>
          <!-- <el-col :span="6">
            <el-form-item label="购买人数">
              <el-input v-model="form.payCount" disabled></el-input>
            </el-form-item>
          </el-col>-->
        </el-row>
        <el-row>
          <el-col :span="12">
            <el-form-item label="原价" prop="originalPrice">
              <el-input type="number" v-model="form.originalPrice"></el-input>
            </el-form-item>
          </el-col>
          <el-col :span="1">&nbsp;</el-col>
          <el-col :span="6">
            <el-form-item label="实际价格" prop="realPrice">
              <el-input type="number" v-model="form.realPrice"></el-input>
            </el-form-item>
          </el-col>
        </el-row>

        <el-form-item label="简介" prop="courseIntroduction">
          <el-input type="textarea" :rows="2" placeholder="请输入内容" v-model="form.courseIntroduction"></el-input>
        </el-form-item>
        <el-form-item v-show="form.id">
          <el-form-item label="简介配图">
            <el-button
              type="primary"
              plain
              icon="el-icon-plus"
              size="mini"
              @click="handleAddImage"
            >新增</el-button>
          </el-form-item>
          <el-table v-loading="loading" :data="imageList">
            <el-table-column
              label="图片名称"
              align="center"
              prop="fileName"
              :show-overflow-tooltip="true"
            />
            <el-table-column label="预览">
              <template slot-scope="{row}">
                <el-image
                  v-show="row.fileUrl"
                  style="width: 60px; height: 60px"
                  :src="row.fileUrl"
                  :preview-src-list="[row.fileUrl]"
                ></el-image>
              </template>
            </el-table-column>
            <el-table-column label="文件大小" align="center" prop="fileSize" width="90px" />
            <el-table-column label="创建时间" align="center" prop="createTime" width="90px" />
            <el-table-column
              label="操作"
              align="center"
              class-name="small-padding fixed-width"
              width="90px"
            >
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="text"
                  icon="el-icon-delete"
                  @click="handleDeleteImage(scope.row.id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
          <el-form-item label="课程视频">
            <el-button
              type="primary"
              plain
              icon="el-icon-plus"
              size="mini"
              @click="handleAddVideo"
            >新增</el-button>
          </el-form-item>
          <el-table v-loading="loading" :data="videoList">
            <el-table-column
              label="视频名称"
              align="center"
              prop="fileName"
              :show-overflow-tooltip="true"
            />
            <el-table-column label="文件大小" align="center" prop="fileSize" width="90px" />
            <el-table-column label="创建时间" align="center" prop="createTime" width="90px" />
            <el-table-column
              label="操作"
              align="center"
              class-name="small-padding fixed-width"
              width="120px"
            >
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="text"
                  icon="el-icon-download"
                  @click="downloadVideo(scope.row.fileUrl)"
                >下载</el-button>
                <el-button
                  size="mini"
                  type="text"
                  icon="el-icon-delete"
                  @click="handleDeleteVideo(scope.row.id,scope.row.filePath)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 添加简介图片弹窗 -->
    <el-dialog :title="iamgeTitle" :visible.sync="imageOpen" width="500px" append-to-body>
      <el-form ref="imageForm" :model="imageForm" label-width="80px">
        <el-row>
          <el-col :span="12">
            <el-form-item label="图片上传">
              <ImageUpload
                v-if="imageOpen"
                v-model="imageForm.fileUrl"
                @setFileFrom="getImageFrom"
              />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="图片名称">
              <el-input v-model="imageForm.fileName"></el-input>
            </el-form-item>
          </el-col>
        </el-row>
        <el-row v-show="false">
          <el-col :span="12">
            <el-form-item label="filePath">
              <el-input v-model="imageForm.filePath"></el-input>
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="fileSize">
              <el-input v-model="imageForm.fileSize"></el-input>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitImageForm">确 定</el-button>
        <el-button @click="iamgeCancel">取 消</el-button>
      </div>
    </el-dialog>

    <!-- 添加视频弹窗 -->
    <el-dialog :title="videoTitle" :visible.sync="videoOpen" width="500px" append-to-body>
      <el-form ref="imageForm" :model="videoForm" label-width="80px">
        <el-row>
          <el-col :span="24">
            <el-form-item label="视频上传">
              <FileUpload
                v-if="videoOpen"
                v-model="videoForm.fileUrl"
                @setFileFrom="getVideoFrom"
                :fileSize="100"
              />
            </el-form-item>
          </el-col>
          <el-col :span="12">
            <el-form-item label="视频名称">
              <el-input v-model="videoForm.fileName"></el-input>
            </el-form-item>
          </el-col>
        </el-row>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitVideoForm">确 定</el-button>
        <el-button @click="videoCancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import ImageUpload from "@/components/ImageUpload";
import FileUpload from "@/components/FileUpload";
import {
  getPage,
  getObj,
  delObj,
  addObj,
  putObj,
  getTeacherList,
  getImageList,
  getVideoList,
  addCourseFile,
  delOssFile
} from "@/api/courseInfo";

export default {
  name: "Notice",
  components: { ImageUpload, FileUpload },
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 讲师数据
      teacherList: [],
      // 弹出层标题
      title: "",
      iamgeTitle: "",
      videoTitle: "",
      // 是否显示弹出层
      open: false,
      imageOpen: false,
      videoOpen: false,
      // 类型数据字典
      statusOptions: [],
      // 状态数据字典
      typeOptions: [],
      // 查询参数
      queryParams: {
        current: 1,
        size: 10,
        teacherName: undefined
      },
      // 表单参数
      form: {},
      imageForm: {},
      videoForm: {},
      // 表单校验
      rules: {
        teacherName: [
          { required: true, message: "讲师不能为空", trigger: "blur" }
        ],
        courseName: [
          { required: true, message: "课程名称不能为空", trigger: "blur" }
        ],
        originalPrice: [
          { required: true, message: "原价不能为空", trigger: "blur" }
        ],
        realPrice: [
          { required: true, message: "实际价格不能为空", trigger: "blur" }
        ]
      },
      imageList: [],
      videoList: [],
      // 讲师下拉数据
      teacherOptions: []
    };
  },
  created() {
    var userInfo = sessionStorage.getItem('userInfo') || ''
    if(userInfo == ''){
      this.$router.push('/login')
      return
    }
    this.getList();
  },

  methods: {
    /** 查询公告列表 */
    getList() {
      this.loading = true;
      getPage(this.queryParams).then(response => {
        this.teacherList = response.data.records;
        this.total = response.data.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        Id: undefined,
        categoryTitle: undefined,
        categoryType: undefined,
        categoryContent: undefined,
        status: "0"
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.current = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id);
      this.single = selection.length != 1;
      this.multiple = !selection.length;
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程";
      this.imageList = [];
      this.videoList = [];
      if (this.teacherOptions.length <= 0) {
        //讲师下拉数据
        getTeacherList().then(res => {
          this.teacherOptions = res.data;
        });
      }
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids;
      getObj(id).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程";

        this.imageList = response.data.imageList;
        this.videoList = response.data.videoList;
      });

      if (this.teacherOptions.length <= 0) {
        //讲师下拉数据
        getTeacherList().then(res => {
          this.teacherOptions = res.data;
        });
      }
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id != undefined) {
            putObj(this.form).then(response => {
              this.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addObj(this.form).then(response => {
              console.log(response);
              this.msgSuccess("新增成功");
              this.form.id = response.data;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const noticeIds = row.id || this.ids;
      this.$confirm('是否确认"' + noticeIds + '"的数据项?', "警告", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(function() {
          return delObj(noticeIds);
        })
        .then(() => {
          this.getList();
          this.msgSuccess("删除成功");
        });
    },
    /** 新增简介图片按钮操作 */
    handleAddImage() {
      this.imageOpen = true;
      this.iamgeTitle = "新增图片";
      this.imageForm = {};
    },
    /** 删除简介图片按钮操作 */
    handleDeleteImage(id) {
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        delOssFile(id).then(response => {
          getImageList(this.form.id).then(response => {
            this.imageOpen = false;
            this.imageList = response.data;
          });
        });

        this.$message({
          type: "success",
          message: "删除成功!"
        });
      });
    },
    getImageFrom(data) {
      this.imageForm = data;
    },
    submitImageForm() {
      this.imageForm.infoId = this.form.id;
      this.imageForm.fileType = "1";
      if (this.imageForm.fileUrl) {
        addCourseFile(this.imageForm).then(response => {
          console.log(response);
          this.msgSuccess("新增成功");

          getImageList(this.form.id).then(response => {
            this.imageOpen = false;
            this.imageList = response.data;
          });
        });
      } else {
        this.$message({
          type: "error",
          message: "请上传文件!"
        });
      }
    },
    iamgeCancel() {
      this.imageOpen = false;
    },
    videoCancel() {
      this.videoOpen = false;
    },

    /** 新增课程视频按钮操作 */
    handleAddVideo() {
      this.videoOpen = true;
      this.videoTitle = "新增视频";
      this.videoForm = {};
    },
    getVideoFrom(data) {
      this.videoForm = data;
    },
    submitVideoForm() {
      this.videoForm.infoId = this.form.id;
      this.videoForm.fileType = "2";
      if (this.videoForm.fileUrl) {
        addCourseFile(this.videoForm).then(response => {
          this.msgSuccess("新增成功");

          getVideoList(this.form.id).then(response => {
            this.videoOpen = false;
            this.videoList = response.data;
          });
        });
      } else {
        this.$message({
          type: "error",
          message: "请上传文件!"
        });
      }
    },
    /** 删除课程视频按钮操作 */
    handleDeleteVideo(id) {
      this.$confirm("此操作将永久删除该文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      }).then(() => {
        delOssFile(id).then(response => {
          getVideoList(this.form.id).then(response => {
            this.videoOpen = false;
            this.videoList = response.data;
          });
          this.$message({
            type: "success",
            message: "删除成功!"
          });
        });
      });
    },

    /** 下载课程视频按钮操作 */
    downloadVideo(fileUrl) {
      window.open(fileUrl);
    },
    /** 保存讲师名称  */
    selectedTeacher(value) {
      let obj = {};
      obj = this.teacherOptions.find(item => {
        return item.id === value;
      });
      this.form.teacherName = obj.teacherName;
    }
  }
};
</script>